Compliant Domestic & International Testing Standards
- GB 6038-2006 Specification for Rubber Mixing & Vulcanization Test Equipment Operation
- GB/T 13577-1992 General Technical Conditions for Rubber & Plastic Two Roll Mills
- HG/T 2149-2004 Test Methods for Open Rubber Mixing Mills
- JB/T 53113-1999 Quality Grading Standard for Plastic Open Mills

Core Competitive Advantages
- Independent Heating & Water Cooling Dual Temperature Regulation
Front and rear rollers are fitted with separated heating tubes and built-in water circulation channels. PID closed-loop control stabilizes temperature accuracy at ±3℃, with adjustable working range from ambient temperature up to 300℃. Users switch heating/cooling modes freely according to material characteristics, eliminating roller overheating or uneven temperature zones that cause scorching.
2.Vanadium-Titanium Alloy Mirror Rollers
Roll blanks adopt integral chilled casting, quenching and hard chrome mirror polishing treatment, reaching surface hardness HRC 50–60. Ultra-smooth mirror surface prevents material adhesion and cross-color contamination when switching formulas. Precision machined hollow flow channels realize rapid, uniform heat transfer for consistent mixing results.
3.Twin Independent Variable Frequency Drive System
Two separate low-noise drive motors control front and rear rollers independently, supporting customizable friction ratios (1:1.1 / 1:1.22 / 1:1.35 / 1:1.4 / 1:1.7). Stepless speed regulation generates adjustable shear force to break carbon black, glass fiber and pigment agglomerates without tearing soft polymer substrates.
4.MCGS Touchscreen Integrated Operation Interface
7-inch color touch HMI integrates temperature display, speed setting, cycle counting and fault alarm functions. All mixing recipes can be saved and recalled with one tap, replacing scattered physical buttons for simpler daily operation and reducing human error during repeated sample preparation.
5.Full Surround Multi-Point Safety Interlock Protection
7 sets of collision emergency stop levers are arranged around the machine frame, paired with top red emergency stop button. When safety barriers are touched, rollers instantly halt and reverse slightly to eliminate pinch hazards. All transmission gears are fully covered by protective housing to meet global laboratory safety requirements.
6.Automatic Centralized Lubrication & Low-Noise Transmission
Hardened worm gear reducers deliver high torque with low vibration. The built-in auto oil supply pump continuously lubricates bearings and gear assemblies during operation, cutting manual maintenance frequency and extending service life of core transmission parts. Integrated thick steel welded cabinet occupies limited lab floor space and is easy to wipe clean.

Technical parameters:
| Model
Project |
KR-110-1 |
KR-110-2 |
KR-110-3 |
KR-110-4 |
| Roller Diameter
(metric /inch) |
120mm/4in |
160mm/6in |
200mm/8in |
250mm/10in |
| Roller face width |
320mm |
320mm |
320mm |
320mm |
| Mixing capacity |
0.3~2kg |
0.5~3kg |
1~10kg |
2~15kg |
| Picking device |
SUS304 Stainless
steel hopper |
SUS304 Stainless steel hopper |
SUS304 Stainless steel hopper |
SUS304 Stainless steel hopper |
| Roller temperature |
RT~300℃ |
RT~300℃ |
RT~300℃ |
RT~300℃ |
| Heating method |
Water-cooled cooling |
Water-cooled cooling |
Water-cooled cooling |
Water-cooled cooling |
| Temp Accuracy |
±3C |
±3C |
±3C |
±3C |
| temperature controller |
PID control |
PID control |
PID control |
PID control |
| Roller Rev |
frequency control |
frequency control |
frequency control |
frequency control |
| Roller ratio
adjusted according requirements |
1:1.22/1:1.35
1:1.4 |
1:1.22/1:1.35
1:1.4 |
1:1.1/1:1.22
1:1.4/1:1.7 |
1:1.1/1:1.22
1:1.4/1:1.7 |
| Roller hardness |
50~60HRC |
50~60HRC |
50~60HRC |
50~60HRC |
| Roller processing |
Mirror polishing chrome plated |
Mirror polishing chrome plated |
Mirror polishing chrome plated |
Mirror polishing chrome plated |
| Roller spacing |
0.1~8mm adjustable |
0.1~8mm adjustable |
0.1~8mm adjustable |
0.1~10mm adjustable |
| Spacing display mode |
Calibration/digital display |
Calibration/digital display |
Calibration/digital display |
Calibration/digital display |
| Safety device |
Collision type emergency stop |
Collision type emergency stop |
Collision type emergency stop |
Collision type emergency stop |
| Safety device number |
7 PCS |
7 PCS |
7 PCS |
7 PCS |
| Special function |
Emergency stop inversion |
Emergency stop inversion |
Emergency stop inversion |
Emergency stop inversion |
| Motor power |
4.5KW |
5.5KW |
7.5KW |
15KW |
| Power voltage |
3phase,AC380V |
3phase,AC380V |
3phase,AC380V |
3phase,AC380V |
| Dimension |
1*1.1*1.4(M) |
1*1.1*1.5(M) |
1.5*1.2*1.5(M) |
1.5*1.3*1.6(M) |
| Weight |
About 2T |
About 2.5T |
About 3.4T |
About 4T |
Standard Complete Mixing Operation Workflow
- Preheating Parameter Setup
Power on the touch control cabinet, set target temperatures for front and rear rollers, activate heating or water cooling function, and wait until temperature readings stabilize before feeding raw materials.
- Raw Material Mastication & Folding
Accurately weigh base polymer, pigments and functional additives, slowly feed materials into the roller nip. Repeatedly fold and thin-pass the stock to soften substrates and disperse filler clusters evenly.
- Roller Gap Calibration
Rotate dual-side handwheels to lock target sheet thickness, repeatedly re-feed folded compound to eliminate color unevenness and particle agglomeration.
- Continuous Specimen Sheeting
After full homogenization, pull smooth uniform sheets from the roller gap, then cut into standard blanks for tensile, aging, hardness and abrasion performance testing.
- Shutdown Cooling & Maintenance
Turn off the heating system first, keep water cooling and rollers running until surface temperature drops below 60℃ before power-off. Wipe roller surfaces completely and check lubricant tank liquid level for the next batch.

Applicable Raw Materials & Industrial Application Fields
Vulcanized Rubber Compounds
Natural rubber, NBR, EPDM, silicone, recycled elastomers, shoe sole stock, automotive sealing rubber for formula screening and durability testing.
Thermoplastic & Modified Plastics
PVC, TPE, TPU, PP, PE, ABS, glass fiber reinforced plastics, low-smoke halogen-free cable raw materials.
Functional Masterbatch
Color masterbatch, conductive masterbatch, foaming materials and soft flexible polymers for lab color matching and filler dispersion verification.
Typical Application Scenarios:
- University & research institute material science teaching and new polymer formula development
- Rubber & plastic factory R&D labs for small-batch trial production and quality comparison
- Color masterbatch manufacturers pigment dispersion performance testing
- Third-party accredited labs standard test specimen preparation

Standard Factory Delivery Package
- KR-110 touchscreen dual-temperature two roll mixing mill main unit
- Pair of vanadium-titanium mirror hard chrome alloy rollers
- Separate electric heating & water circulation cooling assemblies
- MCGS touchscreen PLC centralized control cabinet
- Twin variable-frequency drive motors and hardened reducer set
- Dual-side handwheel roller gap adjustment mechanism
- 7-point full collision emergency stop safety system
- Automatic centralized lubrication pump assembly
- SUS30 stainless material receiving hopper
- Multilingual operation manual, electrical schematics and factory inspection certificate
- Water circulation pipeline fittings and power cables
Global After-Sales & Distributor Cooperation Support
We provide full remote mixing process training and parameter optimization guidance, with long-term supply of spare rollers, heating tubes and sealing parts. Custom roller sizes, maximum temperature limits and overseas voltage conversion versions are available for bulk orders. Exclusive regional agent policies include priority production scheduling, OEM private brand labeling and complete sets of English marketing images and catalog resources.
English Text Markers For All Product Images
Main Banner Title: KR-110 Touchscreen Electric Heat Water Cooling Two Roll Mixing Mill
Control Panel Labels: FRONT TEMP / REAR TEMP / SPEED / CYCLE / START / STOP / EMERGENCY STOP
Feature Overlay Tags: Dual Heating & Water Cooling / PLC Touch Control / Alloy Mirror Rollers / Multi-Point Safety Stop / Auto Lubrication System
Safety Warning Label: WARNING – Keep Hands Clear Of Rotating Rollers During Operation